<template>
  <li @mouseenter="handleEnter(true)" @mouseleave="handleEnter(false)" :style="{background:bgColor}">
    <label>
      <input type="checkbox" v-model="todo.complete"/>
      <span>{{todo.title}}</span>
    </label>
    <button class="btn btn-danger" v-show="isShow" @click="delTodoItem">删除</button>
  </li>
</template>

<script>
    import PubSub from 'pubsub-js'
    export default {
        name: "TodoItem",
        props:{
          todo:Object,
          index:Number
        },
      data(){
          return {
            bgColor:'white',
            isShow:false
          }
      },
      methods:{
          handleEnter(isEnter){
            if(isEnter){
              this.bgColor='#aaaaaa'
              this.isShow=true
            }else {
              this.bgColor='white'
              this.isShow=false
            }
          },
        delTodoItem(){
          PubSub.publish('delTodo',this.index)
        }
      }
    }
</script>

<style scoped>
  /*item*/
  li {
    list-style: none;
    height: 36px;
    line-height: 36px;
    padding: 0 5px;
    border-bottom: 1px solid #ddd;
  }

  li label {
    float: left;
    cursor: pointer;
  }

  li label li input {
    vertical-align: middle;
    margin-right: 6px;
    position: relative;
    top: -1px;
  }

  li button {
    float: right;
    margin-top: 3px;
  }

  li:before {
    content: initial;
  }

  li:last-child {
    border-bottom: none;
  }
</style>
